summaryrefslogtreecommitdiffhomepage
path: root/util-linux/fdisk_sun.c
blob: e7fcc067cd87a2cc92565f4aacbcd4eee258b5f3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
/*
 * fdisk_sun.c
 *
 * I think this is mostly, or entirely, due to
 *      Jakub Jelinek (jj@sunsite.mff.cuni.cz), July 1996
 *
 * Merged with fdisk for other architectures, aeb, June 1998.
 *
 * Sat Mar 20 EST 1999 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
 *      Internationalization
 *
 * Licensed under GPLv2, see file LICENSE in this source tree.
 */

#if ENABLE_FEATURE_SUN_LABEL

#define SUNOS_SWAP 3
#define SUN_WHOLE_DISK 5

#define SUN_LABEL_MAGIC          0xDABE
#define SUN_LABEL_MAGIC_SWAPPED  0xBEDA
#define SUN_SSWAP16(x) (sun_other_endian ? fdisk_swap16(x) : (uint16_t)(x))
#define SUN_SSWAP32(x) (sun_other_endian ? fdisk_swap32(x) : (uint32_t)(x))

/* Copied from linux/major.h */
#define FLOPPY_MAJOR    2

#define SCSI_IOCTL_GET_IDLUN 0x5382

static smallint sun_other_endian;
static smallint scsi_disk;
static smallint floppy;

#ifndef IDE0_MAJOR
#define IDE0_MAJOR 3
#endif
#ifndef IDE1_MAJOR
#define IDE1_MAJOR 22
#endif

static void
guess_device_type(void)
{
	struct stat bootstat;

	if (fstat(dev_fd, &bootstat) < 0) {
		scsi_disk = 0;
		floppy = 0;
	} else if (S_ISBLK(bootstat.st_mode)
		&& (major(bootstat.st_rdev) == IDE0_MAJOR ||
		    major(bootstat.st_rdev) == IDE1_MAJOR)) {
		scsi_disk = 0;
		floppy = 0;
	} else if (S_ISBLK(bootstat.st_mode)
		&& major(bootstat.st_rdev) == FLOPPY_MAJOR) {
		scsi_disk = 0;
		floppy = 1;
	} else {
		scsi_disk = 1;
		floppy = 0;
	}
}

static const char *const sun_sys_types[] = {
	"\x00" "Empty"       , /* 0            */
	"\x01" "Boot"        , /* 1            */
	"\x02" "SunOS root"  , /* 2            */
	"\x03" "SunOS swap"  , /* SUNOS_SWAP   */
	"\x04" "SunOS usr"   , /* 4            */
	"\x05" "Whole disk"  , /* SUN_WHOLE_DISK   */
	"\x06" "SunOS stand" , /* 6            */
	"\x07" "SunOS var"   , /* 7            */
	"\x08" "SunOS home"  , /* 8            */
	"\x82" "Linux swap"  , /* LINUX_SWAP   */
	"\x83" "Linux native", /* LINUX_NATIVE */
	"\x8e" "Linux LVM"   , /* 0x8e         */
/* New (2.2.x) raid partition with autodetect using persistent superblock */
	"\xfd" "Linux raid autodetect", /* 0xfd         */
	NULL
};


static void
set_sun_partition(int i, unsigned start, unsigned stop, int sysid)
{
	sunlabel->infos[i].id = sysid;
	sunlabel->partitions[i].start_cylinder =
		SUN_SSWAP32(start / (g_heads * g_sectors));
	sunlabel->partitions[i].num_sectors =
		SUN_SSWAP32(stop - start);
	set_changed(i);
}

static int
check_sun_label(void)
{
	unsigned short *ush;
	int csum;

	if (sunlabel->magic != SUN_LABEL_MAGIC
	 && sunlabel->magic != SUN_LABEL_MAGIC_SWAPPED
	) {
		current_label_type = LABEL_DOS;
		sun_other_endian = 0;
		return 0;
	}
	sun_other_endian = (sunlabel->magic == SUN_LABEL_MAGIC_SWAPPED);
	ush = ((unsigned short *) (sunlabel + 1)) - 1;
	for (csum = 0; ush >= (unsigned short *)sunlabel;) csum ^= *ush--;
	if (csum) {
		printf("Detected sun disklabel with wrong checksum.\n"
"Probably you'll have to set all the values,\n"
"e.g. heads, sectors, cylinders and partitions\n"
"or force a fresh label (s command in main menu)\n");
	} else {
		g_heads = SUN_SSWAP16(sunlabel->ntrks);
		g_cylinders = SUN_SSWAP16(sunlabel->ncyl);
		g_sectors = SUN_SSWAP16(sunlabel->nsect);
	}
	update_units();
	current_label_type = LABEL_SUN;
	g_partitions = 8;
	return 1;
}

static const struct sun_predefined_drives {
	const char *vendor;
	const char *model;
	unsigned short sparecyl;
	unsigned short ncyl;
	unsigned short nacyl;
	unsigned short pcylcount;
	unsigned short ntrks;
	unsigned short nsect;
	unsigned short rspeed;
} sun_drives[] = {
	{ "Quantum","ProDrive 80S",1,832,2,834,6,34,3662},
	{ "Quantum","ProDrive 105S",1,974,2,1019,6,35,3662},
	{ "CDC","Wren IV 94171-344",3,1545,2,1549,9,46,3600},
	{ "IBM","DPES-31080",0,4901,2,4903,4,108,5400},
	{ "IBM","DORS-32160",0,1015,2,1017,67,62,5400},
	{ "IBM","DNES-318350",0,11199,2,11474,10,320,7200},
	{ "SEAGATE","ST34371",0,3880,2,3882,16,135,7228},
	{ "","SUN0104",1,974,2,1019,6,35,3662},
	{ "","SUN0207",4,1254,2,1272,9,36,3600},
	{ "","SUN0327",3,1545,2,1549,9,46,3600},
	{ "","SUN0340",0,1538,2,1544,6,72,4200},
	{ "","SUN0424",2,1151,2,2500,9,80,4400},
	{ "","SUN0535",0,1866,2,2500,7,80,5400},
	{ "","SUN0669",5,1614,2,1632,15,54,3600},
	{ "","SUN1.0G",5,1703,2,1931,15,80,3597},
	{ "","SUN1.05",0,2036,2,2038,14,72,5400},
	{ "","SUN1.3G",6,1965,2,3500,17,80,5400},
	{ "","SUN2.1G",0,2733,2,3500,19,80,5400},
	{ "IOMEGA","Jaz",0,1019,2,1021,64,32,5394},
};

static const struct sun_predefined_drives *
sun_autoconfigure_scsi(void)
{
	const struct sun_predefined_drives *p = NULL;

#ifdef SCSI_IOCTL_GET_IDLUN
	unsigned int id[2];
	char buffer[2048];
	char buffer2[2048];
	FILE *pfd;
	char *vendor;
	char *model;
	char *q;
	int i;

	if (ioctl(dev_fd, SCSI_IOCTL_GET_IDLUN, &id))
		return NULL;

	sprintf(buffer,
		"Host: scsi%u Channel: %02u Id: %02u Lun: %02u\n",
		/* This is very wrong (works only if you have one HBA),
		   but I haven't found a way how to get hostno
		   from the current kernel */
		0,
		(id[0]>>16) & 0xff,
		id[0] & 0xff,
		(id[0]>>8) & 0xff
	);
	pfd = fopen_for_read("/proc/scsi/scsi");
	if (!pfd) {
		return NULL;
	}
	while (fgets(buffer2, 2048, pfd)) {
		if (strcmp(buffer, buffer2))
			continue;
		if (!fgets(buffer2, 2048, pfd))
			break;
		q = strstr(buffer2, "Vendor: ");
		if (!q)
			break;
		q += 8;
		vendor = q;
		q = strstr(q, " ");
		*q++ = '\0';   /* truncate vendor name */
		q = strstr(q, "Model: ");
		if (!q)
			break;
		*q = '\0';
		q += 7;
		model = q;
		q = strstr(q, " Rev: ");
		if (!q)
			break;
		*q = '\0';
		for (i = 0; i < ARRAY_SIZE(sun_drives); i++) {
			if (*sun_drives[i].vendor && strcasecmp(sun_drives[i].vendor, vendor))
				continue;
			if (!strstr(model, sun_drives[i].model))
				continue;
			printf("Autoconfigure found a %s%s%s\n",
					sun_drives[i].vendor,
					(*sun_drives[i].vendor) ? " " : "",
					sun_drives[i].model);
			p = sun_drives + i;
			break;
		}
		break;
	}
	fclose(pfd);
#endif
	return p;
}

static void
create_sunlabel(void)
{
	struct hd_geometry geometry;
	unsigned ndiv;
	unsigned char c;
	const struct sun_predefined_drives *p = NULL;

	printf(msg_building_new_label, "sun disklabel");

	sun_other_endian = BB_LITTLE_ENDIAN;
	memset(MBRbuffer, 0, sizeof(MBRbuffer));
	sunlabel->magic = SUN_SSWAP16(SUN_LABEL_MAGIC);
	if (!floppy) {
		unsigned i;
		puts("Drive type\n"
		 "   ?   auto configure\n"
		 "   0   custom (with hardware detected defaults)");
		for (i = 0; i < ARRAY_SIZE(sun_drives); i++) {
			printf("   %c   %s%s%s\n",
				i + 'a', sun_drives[i].vendor,
				(*sun_drives[i].vendor) ? " " : "",
				sun_drives[i].model);
		}
		while (1) {
			c = read_nonempty("Select type (? for auto, 0 for custom): ");
			if (c == '0') {
				break;
			}
			if (c >= 'a' && c < 'a' + ARRAY_SIZE(sun_drives)) {
				p = sun_drives + c - 'a';
				break;
			}
			if (c >= 'A' && c < 'A' + ARRAY_SIZE(sun_drives)) {
				p = sun_drives + c - 'A';
				break;
			}
			if (c == '?' && scsi_disk) {
				p = sun_autoconfigure_scsi();
				if (p)
					break;
				printf("Autoconfigure failed\n");
			}
		}
	}
	if (!p || floppy) {
		if (!ioctl(dev_fd, HDIO_GETGEO, &geometry)) {
			g_heads = geometry.heads;
			g_sectors = geometry.sectors;
			g_cylinders = geometry.cylinders;
		} else {
			g_heads = 0;
			g_sectors = 0;
			g_cylinders = 0;
		}
		if (floppy) {
			sunlabel->nacyl = 0;
			sunlabel->pcylcount = SUN_SSWAP16(g_cylinders);
			sunlabel->rspeed = SUN_SSWAP16(300);
			sunlabel->ilfact = SUN_SSWAP16(1);
			sunlabel->sparecyl = 0;
		} else {
			g_heads = read_int(1, g_heads, 1024, 0, "Heads");
			g_sectors = read_int(1, g_sectors, 1024, 0, "Sectors/track");
		if (g_cylinders)
			g_cylinders = read_int(1, g_cylinders - 2, 65535, 0, "Cylinders");
		else
			g_cylinders = read_int(1, 0, 65535, 0, "Cylinders");
			sunlabel->nacyl = SUN_SSWAP16(read_int(0, 2, 65535, 0, "Alternate cylinders"));
			sunlabel->pcylcount = SUN_SSWAP16(read_int(0, g_cylinders + SUN_SSWAP16(sunlabel->nacyl), 65535, 0, "Physical cylinders"));
			sunlabel->rspeed = SUN_SSWAP16(read_int(1, 5400, 100000, 0, "Rotation speed (rpm)"));
			sunlabel->ilfact = SUN_SSWAP16(read_int(1, 1, 32, 0, "Interleave factor"));
			sunlabel->sparecyl = SUN_SSWAP16(read_int(0, 0, g_sectors, 0, "Extra sectors per cylinder"));
		}
	} else {
		sunlabel->sparecyl = SUN_SSWAP16(p->sparecyl);
		sunlabel->ncyl = SUN_SSWAP16(p->ncyl);
		sunlabel->nacyl = SUN_SSWAP16(p->nacyl);
		sunlabel->pcylcount = SUN_SSWAP16(p->pcylcount);
		sunlabel->ntrks = SUN_SSWAP16(p->ntrks);
		sunlabel->nsect = SUN_SSWAP16(p->nsect);
		sunlabel->rspeed = SUN_SSWAP16(p->rspeed);
		sunlabel->ilfact = SUN_SSWAP16(1);
		g_cylinders = p->ncyl;
		g_heads = p->ntrks;
		g_sectors = p->nsect;
		puts("You may change all the disk params from the x menu");
	}

	snprintf((char *)(sunlabel->info), sizeof(sunlabel->info),
		"%s%s%s cyl %u alt %u hd %u sec %u",
		p ? p->vendor : "", (p && *p->vendor) ? " " : "",
		p ? p->model : (floppy ? "3,5\" floppy" : "Linux custom"),
		g_cylinders, SUN_SSWAP16(sunlabel->nacyl), g_heads, g_sectors);

	sunlabel->ntrks = SUN_SSWAP16(g_heads);
	sunlabel->nsect = SUN_SSWAP16(g_sectors);
	sunlabel->ncyl = SUN_SSWAP16(g_cylinders);
	if (floppy)
		set_sun_partition(0, 0, g_cylinders * g_heads * g_sectors, LINUX_NATIVE);
	else {
		if (g_cylinders * g_heads * g_sectors >= 150 * 2048) {
			ndiv = g_cylinders - (50 * 2048 / (g_heads * g_sectors)); /* 50M swap */
		} else
			ndiv = g_cylinders * 2 / 3;
		set_sun_partition(0, 0, ndiv * g_heads * g_sectors, LINUX_NATIVE);
		set_sun_partition(1, ndiv * g_heads * g_sectors, g_cylinders * g_heads * g_sectors, LINUX_SWAP);
		sunlabel->infos[1].flags |= 0x01; /* Not mountable */
	}
	set_sun_partition(2, 0, g_cylinders * g_heads * g_sectors, SUN_WHOLE_DISK);
	{
		unsigned short *ush = (unsigned short *)sunlabel;
		unsigned short csum = 0;
		while (ush < (unsigned short *)(&sunlabel->csum))
			csum ^= *ush++;
		sunlabel->csum = csum;
	}

	set_all_unchanged();
	set_changed(0);
	get_boot(CREATE_EMPTY_SUN);
}

static void
toggle_sunflags(int i, unsigned char mask)
{
	if (sunlabel->infos[i].flags & mask)
		sunlabel->infos[i].flags &= ~mask;
	else
		sunlabel->infos[i].flags |= mask;
	set_changed(i);
}

static void
fetch_sun(unsigned *starts, unsigned *lens, unsigned *start, unsigned *stop)
{
	int i, continuous = 1;

	*start = 0;
	*stop = g_cylinders * g_heads * g_sectors;
	for (i = 0; i < g_partitions; i++) {
		if (sunlabel->partitions[i].num_sectors
		 && sunlabel->infos[i].id
		 && sunlabel->infos[i].id != SUN_WHOLE_DISK) {
			starts[i] = SUN_SSWAP32(sunlabel->partitions[i].start_cylinder) * g_heads * g_sectors;
			lens[i] = SUN_SSWAP32(sunlabel->partitions[i].num_sectors);
			if (continuous) {
				if (starts[i] == *start)
					*start += lens[i];
				else if (starts[i] + lens[i] >= *stop)
					*stop = starts[i];
				else
					continuous = 0;
					/* There will be probably more gaps
					  than one, so lets check afterwards */
			}
		} else {
			starts[i] = 0;
			lens[i] = 0;
		}
	}
}

static unsigned *verify_sun_starts;

static int
verify_sun_cmp(int *a, int *b)
{
	if (*a == -1) return 1;
	if (*b == -1) return -1;
	if (verify_sun_starts[*a] > verify_sun_starts[*b]) return 1;
	return -1;
}

static void
verify_sun(void)
{
	unsigned starts[8], lens[8], start, stop;
	int i,j,k,starto,endo;
	int array[8];

	verify_sun_starts = starts;
	fetch_sun(starts, lens, &start, &stop);
	for (k = 0; k < 7; k++) {
		for (i = 0; i < 8; i++) {
			if (k && (lens[i] % (g_heads * g_sectors))) {
				printf("Partition %u doesn't end on cylinder boundary\n", i+1);
			}
			if (lens[i]) {
				for (j = 0; j < i; j++)
					if (lens[j]) {
						if (starts[j] == starts[i]+lens[i]) {
							starts[j] = starts[i]; lens[j] += lens[i];
							lens[i] = 0;
						} else if (starts[i] == starts[j]+lens[j]){
							lens[j] += lens[i];
							lens[i] = 0;
						} else if (!k) {
							if (starts[i] < starts[j]+lens[j]
							 && starts[j] < starts[i]+lens[i]) {
								starto = starts[i];
								if (starts[j] > starto)
									starto = starts[j];
								endo = starts[i]+lens[i];
								if (starts[j]+lens[j] < endo)
									endo = starts[j]+lens[j];
								printf("Partition %u overlaps with others in "
									"sectors %u-%u\n", i+1, starto, endo);
							}
						}
					}
			}
		}
	}
	for (i = 0; i < 8; i++) {
		if (lens[i])
			array[i] = i;
		else
			array[i] = -1;
	}
	qsort(array, ARRAY_SIZE(array), sizeof(array[0]),
		(int (*)(const void *,const void *)) verify_sun_cmp);
	if (array[0] == -1) {
		printf("No partitions defined\n");
		return;
	}
	stop = g_cylinders * g_heads * g_sectors;
	if (starts[array[0]])
		printf("Unused gap - sectors %u-%u\n", 0, starts[array[0]]);
	for (i = 0; i < 7 && array[i+1] != -1; i++) {
		printf("Unused gap - sectors %u-%u\n", starts[array[i]]+lens[array[i]], starts[array[i+1]]);
	}
	start = starts[array[i]] + lens[array[i]];
	if (start < stop)
		printf("Unused gap - sectors %u-%u\n", start, stop);
}

static void
add_sun_partition(int n, int sys)
{
	unsigned start, stop, stop2;
	unsigned starts[8], lens[8];
	int whole_disk = 0;

	char mesg[256];
	int i, first, last;

	if (sunlabel->partitions[n].num_sectors && sunlabel->infos[n].id) {
		printf(msg_part_already_defined, n + 1);
		return;
	}

	fetch_sun(starts, lens, &start, &stop);
	if (stop <= start) {
		if (n == 2)
			whole_disk = 1;
		else {
			printf("Other partitions already cover the whole disk.\n"
				"Delete/shrink them before retry.\n");
			return;
		}
	}
	snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR));
	while (1) {
		if (whole_disk)
			first = read_int(0, 0, 0, 0, mesg);
		else
			first = read_int(scround(start), scround(stop)+1,
					 scround(stop), 0, mesg);
		if (display_in_cyl_units)
			first *= units_per_sector;
		else
			/* Starting sector has to be properly aligned */
			first = (first + g_heads * g_sectors - 1) / (g_heads * g_sectors);
		if (n == 2 && first != 0)
			printf("\
It is highly recommended that the third partition covers the whole disk\n\
and is of type 'Whole disk'\n");
		/* ewt asks to add: "don't start a partition at cyl 0"
		   However, edmundo@rano.demon.co.uk writes:
		   "In addition to having a Sun partition table, to be able to
		   boot from the disc, the first partition, /dev/sdX1, must
		   start at cylinder 0. This means that /dev/sdX1 contains
		   the partition table and the boot block, as these are the
		   first two sectors of the disc. Therefore you must be
		   careful what you use /dev/sdX1 for. In particular, you must
		   not use a partition starting at cylinder 0 for Linux swap,
		   as that would overwrite the partition table and the boot
		   block. You may, however, use such a partition for a UFS
		   or EXT2 file system, as these file systems leave the first
		   1024 bytes undisturbed. */
		/* On the other hand, one should not use partitions
		   starting at block 0 in an md, or the label will
		   be trashed. */
		for (i = 0; i < g_partitions; i++)
			if (lens[i] && starts[i] <= first && starts[i] + lens[i] > first)
				break;
		if (i < g_partitions && !whole_disk) {
			if (n == 2 && !first) {
				whole_disk = 1;
				break;
			}
			printf("Sector %u is already allocated\n", first);
		} else
			break;
	}
	stop = g_cylinders * g_heads * g_sectors;
	stop2 = stop;
	for (i = 0; i < g_partitions; i++) {
		if (starts[i] > first && starts[i] < stop)
			stop = starts[i];
	}
	snprintf(mesg, sizeof(mesg),
		"Last %s or +size or +sizeM or +sizeK",
		str_units(SINGULAR));
	if (whole_disk)
		last = read_int(scround(stop2), scround(stop2), scround(stop2),
				0, mesg);
	else if (n == 2 && !first)
		last = read_int(scround(first), scround(stop2), scround(stop2),
				scround(first), mesg);
	else
		last = read_int(scround(first), scround(stop), scround(stop),
				scround(first), mesg);
	if (display_in_cyl_units)
		last *= units_per_sector;
	if (n == 2 && !first) {
		if (last >= stop2) {
			whole_disk = 1;
			last = stop2;
		} else if (last > stop) {
			printf(
"You haven't covered the whole disk with the 3rd partition,\n"
"but your value %u %s covers some other partition.\n"
"Your entry has been changed to %u %s\n",
				scround(last), str_units(SINGULAR),
				scround(stop), str_units(SINGULAR));
			last = stop;
		}
	} else if (!whole_disk && last > stop)
		last = stop;

	if (whole_disk)
		sys = SUN_WHOLE_DISK;
	set_sun_partition(n, first, last, sys);
}

static void
sun_delete_partition(int i)
{
	unsigned int nsec;

	if (i == 2
	 && sunlabel->infos[i].id == SUN_WHOLE_DISK
	 && !sunlabel->partitions[i].start_cylinder
	 && (nsec = SUN_SSWAP32(sunlabel->partitions[i].num_sectors)) == g_heads * g_sectors * g_cylinders)
		printf("If you want to maintain SunOS/Solaris compatibility, "
			"consider leaving this\n"
			"partition as Whole disk (5), starting at 0, with %u "
			"sectors\n", nsec);
	sunlabel->infos[i].id = 0;
	sunlabel->partitions[i].num_sectors = 0;
}

static void
sun_change_sysid(int i, int sys)
{
	if (sys == LINUX_SWAP && !sunlabel->partitions[i].start_cylinder) {
		read_maybe_empty(
			"It is highly recommended that the partition at offset 0\n"
			"is UFS, EXT2FS filesystem or SunOS swap. Putting Linux swap\n"
			"there may destroy your partition table and bootblock.\n"
			"Type YES if you're very sure you would like that partition\n"
			"tagged with 82 (Linux swap): ");
		if (strcmp (line_ptr, "YES\n"))
			return;
	}
	switch (sys) {
	case SUNOS_SWAP:
	case LINUX_SWAP:
		/* swaps are not mountable by default */
		sunlabel->infos[i].flags |= 0x01;
		break;
	default:
		/* assume other types are mountable;
		   user can change it anyway */
		sunlabel->infos[i].flags &= ~0x01;
		break;
	}
	sunlabel->infos[i].id = sys;
}

static void
sun_list_table(int xtra)
{
	int i, w;

	w = strlen(disk_device);
	if (xtra)
		printf(
		"\nDisk %s (Sun disk label): %u heads, %u sectors, %u rpm\n"
		"%u cylinders, %u alternate cylinders, %u physical cylinders\n"
		"%u extra sects/cyl, interleave %u:1\n"
		"%s\n"
		"Units = %s of %u * 512 bytes\n\n",
			disk_device, g_heads, g_sectors, SUN_SSWAP16(sunlabel->rspeed),
			g_cylinders, SUN_SSWAP16(sunlabel->nacyl),
			SUN_SSWAP16(sunlabel->pcylcount),
			SUN_SSWAP16(sunlabel->sparecyl),
			SUN_SSWAP16(sunlabel->ilfact),
			(char *)sunlabel,
			str_units(PLURAL), units_per_sector);
	else
		printf(
	"\nDisk %s (Sun disk label): %u heads, %u sectors, %u cylinders\n"
	"Units = %s of %u * 512 bytes\n\n",
			disk_device, g_heads, g_sectors, g_cylinders,
			str_units(PLURAL), units_per_sector);

	printf("%*s Flag    Start       End    Blocks   Id  System\n",
		w + 1, "Device");
	for (i = 0; i < g_partitions; i++) {
		if (sunlabel->partitions[i].num_sectors) {
			uint32_t start = SUN_SSWAP32(sunlabel->partitions[i].start_cylinder) * g_heads * g_sectors;
			uint32_t len = SUN_SSWAP32(sunlabel->partitions[i].num_sectors);
			printf("%s %c%c %9lu %9lu %9lu%c  %2x  %s\n",
				partname(disk_device, i+1, w),                  /* device */
				(sunlabel->infos[i].flags & 0x01) ? 'u' : ' ',  /* flags */
				(sunlabel->infos[i].flags & 0x10) ? 'r' : ' ',
				(long) scround(start),                          /* start */
				(long) scround(start+len),                      /* end */
				(long) len / 2, len & 1 ? '+' : ' ',            /* odd flag on end */
				sunlabel->infos[i].id,                          /* type id */
				partition_type(sunlabel->infos[i].id));         /* type name */
		}
	}
}

#if ENABLE_FEATURE_FDISK_ADVANCED

static void
sun_set_alt_cyl(void)
{
	sunlabel->nacyl =
		SUN_SSWAP16(read_int(0, SUN_SSWAP16(sunlabel->nacyl), 65535, 0,
				"Number of alternate cylinders"));
}

static void
sun_set_ncyl(int cyl)
{
	sunlabel->ncyl = SUN_SSWAP16(cyl);
}

static void
sun_set_xcyl(void)
{
	sunlabel->sparecyl =
		SUN_SSWAP16(read_int(0, SUN_SSWAP16(sunlabel->sparecyl), g_sectors, 0,
				"Extra sectors per cylinder"));
}

static void
sun_set_ilfact(void)
{
	sunlabel->ilfact =
		SUN_SSWAP16(read_int(1, SUN_SSWAP16(sunlabel->ilfact), 32, 0,
				"Interleave factor"));
}

static void
sun_set_rspeed(void)
{
	sunlabel->rspeed =
		SUN_SSWAP16(read_int(1, SUN_SSWAP16(sunlabel->rspeed), 100000, 0,
				"Rotation speed (rpm)"));
}

static void
sun_set_pcylcount(void)
{
	sunlabel->pcylcount =
		SUN_SSWAP16(read_int(0, SUN_SSWAP16(sunlabel->pcylcount), 65535, 0,
				"Number of physical cylinders"));
}
#endif /* FEATURE_FDISK_ADVANCED */

static void
sun_write_table(void)
{
	unsigned short *ush = (unsigned short *)sunlabel;
	unsigned short csum = 0;

	while (ush < (unsigned short *)(&sunlabel->csum))
		csum ^= *ush++;
	sunlabel->csum = csum;
	write_sector(0, sunlabel);
}
#endif /* SUN_LABEL */